Join Date: Sep 1999
Location: Vancouver, Washingon
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Re: SBC - 305 vs 350 clutch/flywheel
The Chevy 305 / 350 share the same bellhousing bolt pattern. The Chevy 305 / 350 are both 3.48" stroke engines that are internally balanced, so there is no problem with a counterweight. There are different size clutch diameters for the Chevy 305 / 350. The two basic sizes are 10.4" usually cars has 10.4" clutches and usually pickup trucks had 11.0" clutches. The flywheels for the 10.4" clutch is 153 teeth. The flywheels for the 11.0" clutch is 168 theeth. Usually the pickup clutch / flywheel will not have enought room inside car bellhousing. [img]images/graemlins/frown.gif[/img]
Now having said that, in 1987 the Chevy 305 / 350 crankshaft has a one piece seal, so the flywheels before 1986 and older WILL NOT fit the 1987 and newer Chevy 305 / 350.
If you go mixing flywheels on the Chevy 305 / 350 there is always the nightmare of finding the correct starter. [img]images/graemlins/confused.gif[/img] There are some minor differences in the Chevy 305 / 350 starter noses that can make you go [img]images/graemlins/cussing.gif[/img]